White Sox retire Baines' No. 3
List of Major League Baseball retired numbers - Wikipedia
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List of National Football League retired numbers - Wikipedia
The Greatest MLB Players of All Time to Wear Each Number from 1 to 50, News, Scores, Highlights, Stats, and Rumors
Retired Uniforms by Division: National League West - Beyond the Box Score
Buckley: Who's next? Examining the state of Boston's retired numbers - The Athletic
Which pro sports teams have the most retired numbers?
UCLA honors Jackie Robinson by retiring number 42 across all sports
Retired Uniform Numbers in the American League
Retired shirt numbers: Clubs and players to give & receive honour
Barry Bonds gets closure he always wanted as Giants retire his jersey